Packing List; Adjusting The Chain Tension - Ryobi RCS4240NB Operator's Manual

ASSEMBLY
WARNING
If any parts are damaged or missing do not
operate this product until the parts are replaced.
Failure to heed this warning could result in
serious personal injury. This product has been
shipped completely assembled.
WARNING
Do not attempt to modify this product or create
accessories not recommended for use with this
product. Any such alteration or modification is
misuse and could result in a hazardous condition
leading to possible serious personal injury.
Note: The chainsaw has been fully factory
tested. It is normal to find some slight lubricant
residue on the saw. Read and remove all hang
tags and store with the Operator's Manual.
WARNING
Before first use, it is essential that you follow the
'Chain Adjustment' guide (following this section)
to ensure the bar and chain have not become
loose in transit. Never operate a chainsaw with
incorrectly adjusted chains. Failure to follow
these steps could result in severe personal injury.
UNPACKING
Carefully remove the product and any accessories
from the box. Make sure that all items listed in the
packing list are included.
Inspect the product carefully to make sure no
breakage or damage occurred during shipping.
Do not discard the packing material until you have
carefully inspected and satisfactorily operated the
product.
If any parts are damaged or missing, please call your
Ryobi service centre for assistance.

PACKING LIST

Chainsaw
Scabbard
Combination Wrench
2-Stroke Engine Lubricant
Bar and Chain Lubricant
Operator's Manual

ADJUSTING THE CHAIN TENSION

See Figures 2-3, 36, 41-44.
WARNING
The saw chain is very sharp. Never touch or
adjust the chain while the engine is running.
Always wear protective gloves when performing
English
maintenance on the chain.
1. Stop the engine before setting the chain tension.
2. Make sure the bar mounting nuts are loosened to
3. Turn the chain tensioning screw clockwise/counter-
clockwise to increase/reduce chain tension. Check the
chain tension frequently. (Figure 43)
4. Hold the tip of the guide bar up and tighten the bar
mounting nuts securely. The chain is correctly
tensioned when there is no sag on the underside of
the guide bar, the chain is snug, but it can be turned
by hand without binding. Ensure that the chain brake
is not set.
COLD CHAIN
Note: A cold chain is correctly tensioned when there is
no slack on the underside of the guide bar, the chain is
snug, and it can be turned by hand without binding.
Re-tension the chain whenever the flats on the drive links
hang out of the bar groove. (Figure 3)
WARM CHAIN
Note: During normal saw operation, the temperature
of the chain increases. The drive links of a correctly
tensioned warm chain will hang approximately 1.2 mm
out of the bar groove. The tip of the combination wrench
can be used as a guide to help determine the correct
warm chain tension.
Note: New chains tend to stretch; check the chain
tension frequently and tension as required. The same
rule would apply to your new chainsaw.
1. Lift the tip of the guide bar up to check for sag. (Figure
42)
2. Release the tip of the guide bar and turn the chain
tensioning screw 1/2 turn clockwise. Repeat this
process until sag does not exist.
3. Hold the tip of the guide bar up and tighten the bar
mounting nuts securely. The chain is correctly
tensioned when there is no sag on the underside of
the guide bar, the chain is snug, but it can be turned
by hand without binding. Ensure that the chain brake
is not set.
Note: If chain is too tight, it will not rotate. Loosen the bar
mounting nuts slightly and turn the tension adjuster 1/4
turn counterclockwise. Lift the tip of the guide bar up and
retighten the bar mounting nuts securely. Ensure that the
chain will rotate without binding.
CAUTION
A chain tensioned while warm may be too tight
upon cooling. Check the "cold tension" before
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